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I.G. Mitrofanov, D.S. Anfimov, A.S. Kozyrev, M.L. Litvak, A.B. Sanin, V.I. Tret'yakov (Institute for Space Research, Moscow), W. Boynton, C. Shinohara, D. Hamara (U. Arizona), R.S. Saunders (JPL), HEND Team, GRS Team, Odyssey Team
The mapping data of neutrons from Martian surface are presented, which were obtained by the High Energy Neutron Detector (HEND) onboard NASA Odyssey spacecraft. The stable features of neutron depressions are discribed, which manifest high concentration of hydrogen in the subsurface. The presence of hydrogen is associated with the presence of water, which content at provinces of neutron depressions is estimated. Seasonal variations of neutron emission of Mars are discusssed as well, which are manifested by 220 days of continuouse measurements
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Bulletin of the American Astronomical Society, 34, #3< br> © 2002. The American Astronomical Soceity.